Added CII Best Practices Badge

Signed-off-by: Flurb <[email protected]>

Author: Flurb

README.md

@@ -5,6 +5,7 @@ SPDX-License-Identifier: Apache-2.0
 -->
 
 [![REUSE status](https://api.reuse.software/badge/github.com/com-pas/compas-deployment)](https://api.reuse.software/info/github.com/com-pas/compas-deployment)
+[![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/5925/badge)](https://bestpractices.coreinfrastructure.org/projects/5925)
 [![Slack](https://raw.githubusercontent.com/com-pas/compas-architecture/master/public/LFEnergy-slack.svg)](http://lfenergy.slack.com/)
 
 # CoMPAS Deployment Repository